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Page Title:
REAR SIDE MARKER LIGHT(S) DO NOT OPERATE. (Cont) |
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 TM 9-2330-385-14
2. REAR SIDE MARKER LIGHT(S) DO NOT OPERATE (CONT).
4.
TEST OPTIONS
KNOWN INFO
WARNING
Read WARNING
Continuity test.
Truck electrical system OK.
on Page 4-137
All other trailer lights operate.
Light lamp is OK.
REASON FOR QUESTION
Is continuity measured on
If continuity is not measured on
POSSIBLE PROBLEMS
center contact and
center contact, voltage cannot
be supplied to light lamp and
connector?
Marker light faulty.
light will not operate.
Wire 1012-26 faulty.
Replace rear side
marker light
NO
Verify repair, go to
Step 6 of this Fault.
YES
5.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
Truck electrical system OK.
on Page 4-137
Voltage test.
All other trailer lights operate.
Light lamp OK.
REASON FOR QUESTION
Marker light OK.
Are 10 to 14 vdc measured on
If voltage is not supplied to rear
wire 1012-26 at connector?
POSSIBLE PROBLEMS
side marker light on wire 1012-
26, marker light will not operate.
Wire 1012-26 faulty.
Repair wire 1012-26
(see schematic, Fig
NO
side marker harness
Verify repair, go to
Step 6 of this Fault.
YES
Fault not corrected.
Notify supervisor.
4-136
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